Bhagavad Gītā Chapter Nine Title
rājavidyā rājaguhya yogaḥ
The Yoga of Sovereign True Knowledge and Sovereign Mystery.rāja - a king, sovereign, chief or best of its kindvidyā - any knowledge whether true or false; knowledge of the soul or spiritual knowledge; true knowledge; science, learning, scholarship, philosophyguhya - mysteryyoga - the act of yoking, joining, attaching, harnessing; a yoke, team, vehicle, conveyance; employment, use, application, performance; a means, expedient, device, way, manner, method
Commentaries and Reflections
Commentary by Paul Harvey:
The Yoga of the highest knowledge, the highest secret.